Downshift Tuning
Posted: Wed Jun 17, 2015 4:19 am
Hi,
I am new here in this forum and new to MS. I have an MS3 with MS3X and a msgpio communicating thru can running mshift. Both these were diy kits purchased from DIY Auto Tune that I assembled myself. The MS3 is running a 231ci buick v6 and the gpio a 4L60e auto box. Both are running in the car now and i am currently trying to get the gearbox shifting the way i would like it. I know that my shift tables are not yet perfect but if someone would be able to help me i need some help with the downshifting behaviour of the box. When decelerating it seems to change back down the gears all the way to first even though the road speed is still too high for first gear i.e. it should be in second gear instead. When i re-apply the accelerator the engine rpm climbs rapidly as though the trans is in neutral and then changes to a higher or more appropriate gear for the load and speed. It maybe a setting I have missed or entered incorrectly but i cannot see it at this time, so if someone could take a look at my tune and log file and give me some pointers it would be appreciated. I am using Tunerstudio v2.6.19 with MS3 format 0435.16 and v5.101 mshift.
Below are my tune and log files. I had to compress my logs files as they are all too large. At 404.000 in the log you can see that the box changes back to first even though the speed is about 75kph. Hope you can view what i am experiencing with the downshifts.
Thanks
I am new here in this forum and new to MS. I have an MS3 with MS3X and a msgpio communicating thru can running mshift. Both these were diy kits purchased from DIY Auto Tune that I assembled myself. The MS3 is running a 231ci buick v6 and the gpio a 4L60e auto box. Both are running in the car now and i am currently trying to get the gearbox shifting the way i would like it. I know that my shift tables are not yet perfect but if someone would be able to help me i need some help with the downshifting behaviour of the box. When decelerating it seems to change back down the gears all the way to first even though the road speed is still too high for first gear i.e. it should be in second gear instead. When i re-apply the accelerator the engine rpm climbs rapidly as though the trans is in neutral and then changes to a higher or more appropriate gear for the load and speed. It maybe a setting I have missed or entered incorrectly but i cannot see it at this time, so if someone could take a look at my tune and log file and give me some pointers it would be appreciated. I am using Tunerstudio v2.6.19 with MS3 format 0435.16 and v5.101 mshift.
Below are my tune and log files. I had to compress my logs files as they are all too large. At 404.000 in the log you can see that the box changes back to first even though the speed is about 75kph. Hope you can view what i am experiencing with the downshifts.
Thanks